body {
    background: url("../img/bg.jpg") no-repeat center top;
}

.clearfix::after{
    content: "";
    display: block;
    clear: both;
}

.header {
    width: 1198px;
    height: 73px;
    line-height: 73px;
    color: #f8b770;
    background: red;
    margin: 0 auto;
    margin-top: 45px;
    background: url("../img/bg_nav.jpg") no-repeat 0 0/100% 100%;
    border: 1px solid #3f2a22;
    border-left: none;
    border-right: none;
    position: relative;
}

.header nav a {
    float: left;
    width: 161px;
    height: 73px;
    box-sizing: border-box;
    text-align: center;
    border: 1px solid #3f2a22;
    border-top: none;
    border-bottom: none;
}

.header nav a:nth-child(3) {
    margin-right: 232px;
}

.header .logo {
    position: absolute;
    width: 238px;
    height: 118px;
    background: url("../img/logo.png") no-repeat;
    left: 7px;
    top: -37px;
    right: 0;
    margin: auto;
}

.header .logo h1 {
    display: none;
}

.menu {
    text-align: center;
    margin-top: 473px;
}

.menu a {
    display: inline-block;
    width: 323px;
    height: 105px;
    background: url("../img/btns.png") no-repeat;
}

.menu a span {
    display: none;
}

.menu a.download {
    background-position: -323px 0;
}

.adv {
    width: 1203px;
    margin: 76px auto;
}

.adv .item{
    float: left;
    width: 290px;
    height: 200px;
    margin-right: 13px;
    outline: 1px solid #3f2a22;
}

.adv .item:last-child{
    margin-right: 0;
}

.adv .item .title{
    height: 50px;
    line-height: 50px;
    text-align: center;
    background: #211510;
    color: #f8b700;
    border-bottom: 1px solid #3f2a22;
    box-sizing: border-box;
}

.adv .item .img{
    height: 150px;
}

.adv .item .img img{
    width: 290px;
    height: 150px;
}